From 4c516b0b3a6388be4eecac0c6d779555b4448756 Mon Sep 17 00:00:00 2001 From: Mohammad Omidvar Date: Tue, 13 Dec 2022 15:05:39 -0800 Subject: [PATCH] Replace NoLandingPad with another alive Visitor The broken reference to the non-existing `NoLandingPad` is replaced by `LocalUseCounter` to fix this document. --- src/mir/visitor.md | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/src/mir/visitor.md b/src/mir/visitor.md index 5c21d530..1c3ef13b 100644 --- a/src/mir/visitor.md +++ b/src/mir/visitor.md @@ -37,12 +37,10 @@ code that will execute whenever a `foo` is found. If you want to recursively walk the contents of the `foo`, you then invoke the `super_foo` method. (NB. You never want to override `super_foo`.) -A very simple example of a visitor can be found in [`NoLandingPads`]. -That visitor doesn't even require any state: it just visits all -terminators and removes their `unwind` successors. +A very simple example of a visitor can be found in [`LocalUseCounter`]. +By implementing `visit_local` method, this visitor counts how many tims each local is used. - -[`NoLandingPads`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir_transform/no_landing_pads/struct.NoLandingPads.html +[`LocalUseCounter`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir_transform/simplify_try/struct.LocalUseCounter.html ## Traversal